Series fan inclination structure

ABSTRACT

A series fan inclination structure includes an inclined frame body assembly, a first rotor assembly and a second rotor assembly. The inclined frame body assembly has a receiving space. The receiving space includes a first space, a second space and a flow guide passage. A first base seat is obliquely disposed in the first space. A second base seat is obliquely disposed in the second space. The flow guide passage is formed between the first and second base seats in communication with the first and second spaces. The first and second rotor assemblies are correspondingly rotatably disposed on the first and second base seats. The series fan inclination structure is able to greatly reduce the vibration and lower the noise caused by the interaction of the dipole.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates generally to a series fan inclinationstructure, and more particularly to a series fan inclination structure,which can greatly reduce the vibration and lower the noise.

2. Description of the Related Art

Along with the continuous advance of science and technologies, thedependence of peoples on various electronic apparatuses has more andmore increased. In operation, the internal components of the electronicproducts (such as computers and notebooks) will generate high heat. Theheat generated by the internal components must be conducted outside theelectronic product in time. Otherwise, the electronic product willoverheat. In general, a fan is disposed in the electronic product todissipate the heat and keep the electronic product operating at anoperation temperature within a certain range.

Please refer to FIGS. 1A and 1B. In a conventional series fan 1, the fanframes 10 are mated and serially connected with each other. With respectto the heat dissipation of a large-scale apparatus, sometimes multipleseries fans are further combined in parallel and co-used. When theseries fan 1 operates, on the design principle of the motor torqueoperation, the fan 1 will inevitably vibrate, especially in the casethat more than two series fans 1 are combined in parallel and co-used.The parallel combination of the series fans 1 is able to increase theair volume so as to effectively exhaust the heat from the interior ofthe electronic product. However, when all the series fans 1simultaneously operate, under the inter-affection of the ground-statevibration frequency of the fan impellers 11 of the fans 1, the fanframes 10 will severely resonate. The series fans 1 are combined inparallel so that the pairs of fans will interact on each other tosynergize the development of the noise dipole. This will make loudnoise.

According to the above, the conventional series fan has the followingshortcomings:

1. The vibration of the fan is more serious.

2. Due to the development and interaction of the dipole, the fan willmake loud noise.

It is therefore tried by the applicant to provide a series faninclination structure to solve the above problems of the conventionalseries fan.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide aseries fan inclination structure, which can greatly reduce thevibration.

It is a further object of the present invention to provide a series faninclination structure, which can destruct the interaction of the noisedipole so as to lower the noise.

To achieve the above and other objects, the series fan inclinationstructure of the present invention includes an inclined frame bodyassembly, a first rotor assembly and a second rotor assembly. Theinclined frame body assembly has a receiving space. The receiving spaceincludes a first space, a second space and a flow guide passage. A firstbase seat is obliquely disposed in the first space. A second base seatis obliquely disposed in the second space. The flow guide passage isformed between the first and second base seats in communication with thefirst and second spaces. The first rotor assembly is correspondinglydisposed on the first base seat. The first rotor assembly has a firstshaft and multiple first blades. One end of the first shaft is rotatablydisposed on the first base seat. The second rotor assembly iscorrespondingly disposed on the second base seat. The second rotorassembly has a second shaft and multiple second blades. One end of thesecond shaft is rotatably disposed on the second base seat.

In the above series fan inclination structure, the inclined frame bodyassembly has a horizontal axis. The horizontal axis and outer wall ofthe inclined frame body assembly contain a first angle. The inclinedframe body assembly has a first vertical axis. The first vertical axisand the first base seat contain a second angle. The inclined frame bodyassembly has a second vertical axis. The second vertical axis and thesecond base seat contain a third angle. In other words, the inclinedframe body assembly has an inclined configuration and the first andsecond base seats are obliquely disposed on the inner wall of theinclined frame body assembly. Therefore, the first and second rotorassemblies are also rotatably disposed on the first and second baseseats in an inclined state. Accordingly, the entire series fan has aninclined structure. In this case, the flow direction and pattern of theairflow entering the series fan structure are changed and thedevelopment of audio frequency of the dipole is destructed. This solvesthe problem of the conventional series fan that when multiple seriesfans are combined in parallel and co-used, the pairs of fans willinteract on each other to synergize the development of the noise dipoleand cause great vibration and make loud noise. Therefore, the presentinvention can greatly lower the noise.

BRIEF DESCRIPTION OF THE DRAWINGS

The structure and the technical means adopted by the present inventionto achieve the above and other objects can be best understood byreferring to the following detailed description of the preferredembodiments and the accompanying drawings, wherein:

FIG. 1A is a perspective view of a conventional series fan structure;

FIG. 1B is a sectional assembled view of the conventional series fanstructure;

FIG. 2 is a perspective exploded view of a first embodiment of theseries fan inclination structure of the present invention;

FIG. 3 is a perspective assembled view of the first embodiment of theseries fan inclination structure of the present invention;

FIG. 4 is a sectional view of the first embodiment of the series faninclination structure of the present invention;

FIG. 5 is a sectional view of a second embodiment of the series faninclination structure of the present invention;

FIG. 6 is a perspective exploded view of a third embodiment of theseries fan inclination structure of the present invention;

FIG. 7 is a perspective assembled view of the third embodiment of theseries fan inclination structure of the present invention;

FIG. 8 is a perspective assembled view of a fourth embodiment of theseries fan inclination structure of the present invention; and

FIG. 9 is a sectional assembled view of the fourth embodiment of theseries fan inclination structure of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 2, 3 and 4. FIG. 2 is a perspective exploded viewof a first embodiment of the series fan inclination structure of thepresent invention. FIG. 3 is a perspective assembled view of the firstembodiment of the series fan inclination structure of the presentinvention. FIG. 4 is a sectional view of the first embodiment of theseries fan inclination structure of the present invention. According tothe first embodiment, the series fan inclination structure 2 of thepresent invention includes an inclined frame body assembly 21, a firstrotor assembly 23 and a second rotor assembly 24. The inclined framebody assembly 21 has a receiving space 22. The receiving space 22includes a first space 221, a second space 222 and a flow guide passage223. A first base seat 224 is obliquely disposed in the first space 221.A second base seat 225 is obliquely disposed in the second space 222.The flow guide passage 223 is formed between the first and second baseseats 224, 225 in communication with the first and second spaces 221,222. The first base seat 224 has multiple first support sections 2241.The second base seat 225 has multiple second support sections 2251. Thefirst and second support sections 2241, 2251 are connected to the innerwall of the inclined frame body assembly 21. The structure andconfiguration of the first and second support sections 2241, 2251 can bedesigned as static blade wing-shaped structures (as shown in FIG. 2) orrib structures (not shown) according to the requirement of a user. Thiswill not affect the effect achieved by the present invention.

The inclined frame body assembly 21 has a horizontal axis L1. Thehorizontal axis L1 and the outer wall of the inclined frame bodyassembly 21 contain a first angle α. The inclined frame body assembly 21has a first vertical axis L2. The first vertical axis L2 and the firstbase seat 224 contain a second angle β. The inclined frame body assembly21 further has a second vertical axis L3. The second vertical axis L3and the second base seat 225 contain a third angle γ. The first, secondand third angles α, β, γ are not specifically limited and are determinedby the inclination of the inclined frame body assembly 21 and theinclinations of the first and second base seats 224, 225 obliquelydisposed in the first and second spaces 221, 222.

The first rotor assembly 23 is correspondingly disposed on the firstbase seat 224. The first rotor assembly 23 has a first shaft 232 andmultiple first blades 233. One end of the first shaft 232 is rotatablydisposed on the first base seat 224. The first rotor assembly 23 furtherhas a first receiving section 231 for receiving therein a first statorassembly 25.

The second rotor assembly 24 is correspondingly disposed on the secondbase seat 225. The second rotor assembly 24 has a second shaft 242 andmultiple second blades 243. One end of the second shaft 242 is rotatablydisposed on the second base seat 225. The second rotor assembly 24further has a second receiving section 241 for receiving therein asecond stator assembly 26.

Please further refer to FIGS. 2 and 3. In this embodiment, the inclinedframe body assembly 21 further has a first support frame 226 and asecond support frame 227. The first support frame 226 and the first baseseat 224 are integrally formed. The second support frame 227 and thesecond base seat 225 are integrally formed. The first and second supportframes 226, 227 are assembled by means of insertion, locking, adhesion,engagement or latching. The first support frame 226 has a first airinlet 2261 and a first air outlet 2262. The first air inlet 2261 and thefirst air outlet 2262 communicate with the first space 221. The secondsupport frame 227 has a second air inlet 2271 and a second air outlet2272. The second air inlet 2271 and the second air outlet 2272communicate with the second space 222.

According to the structural design of the present invention, in use, thefirst air outlet 2262 of the first support frame 226 is correspondinglymated and connected with the second air inlet 2271 of the second supportframe 227. (Alternatively, as shown in FIG. 5, in a second embodiment,the first air outlet 2262 of the first support frame 226 iscorrespondingly mated and connected with the second air outlet 2272 ofthe second support frame 227). The inclined frame body assembly 21 hasan inclined configuration and the first and second base seats 224, 225are obliquely disposed on the inner wall of the inclined frame bodyassembly 21, (that is, the first and second base seats 224, 225 and thefirst and second vertical axes L2, L3 contain the second and thirdangles β and γ as shown in FIGS. 4 and 5). Therefore, the first andsecond rotor assemblies 23, 24 are also disposed on the first and secondbase seats 224, 225 in a state inclined from the horizontal axis L1.Accordingly, the entire series fan has an inclined structure. In thiscase, after the airflow 3 flows into the first space 221 from the firstair inlet 2261, the airflow 3 will flow through the flow guide passage223 and the first air outlet 2262 and then flow into the second airinlet 2271 and the second space 222. Finally, the airflow 3 flows outfrom the second air outlet 2272. Accordingly, the flow direction andpattern of the airflow 3 entering the series fan structure are changedand the development of audio frequency of the dipole is destructed. Thissolves the problem of the conventional series fan that when multipleseries fans are combined in parallel and co-used, the pairs of fans willinteract on each other to synergize the development of the noise dipoleand cause great vibration and make loud noise. Therefore, the presentinvention can be greatly lower the noise.

Please now refer to FIGS. 6 and 7. FIG. 6 is a perspective exploded viewof a third embodiment of the series fan inclination structure of thepresent invention. FIG. 7 is a perspective assembled view of the thirdembodiment of the series fan inclination structure of the presentinvention. The third embodiment is partially identical to the firstembodiment in component and relationship between the components and thuswill not be repeatedly described hereinafter. The third embodiment ismainly different from the first embodiment in that in this embodiment,the inclined frame body assembly 21 has another form. The inclined framebody assembly 21 has an upper support frame 228 and a lower supportframe 229. In this embodiment, the lower support frame 229 and the firstand second base seats 224, 225 are, but not limited to, integrallyformed. In practice, alternatively, the upper support frame 228 and thefirst and second base seats 224, 225 are integrally formed (not shown).The upper and lower support frames 228, 229 are assembled by means ofinsertion, locking, adhesion, engagement or latching. The structuraldesign of this embodiment can also achieve the same effect as the aboveembodiment.

Finally, please refer to FIGS. 8 and 9. FIG. 8 is a perspectiveassembled view of a fourth embodiment of the series fan inclinationstructure of the present invention. FIG. 9 is a sectional assembled viewof the fourth embodiment of the series fan inclination structure of thepresent invention. The fourth embodiment is partially identical to thefirst embodiment in component and relationship between the componentsand thus will not be repeatedly described hereinafter. The fourthembodiment is mainly different from the first embodiment in thatmultiple inclined frame body assemblies 21 are further combined inparallel and co-used. The inclined frame body assemblies 21 areapplicable to a large-scale apparatus for dissipating the heat thereof.This solves the problem of the conventional series fan that whenmultiple series fans are combined in parallel and co-used, the pairs offans will interact on each other to synergize the development of thenoise dipole and cause great vibration and make loud noise. Therefore,the present invention can greatly lower the noise.

The present invention has been described with the above embodimentsthereof and it is understood that many changes and modifications in suchas the form or layout pattern or practicing step of the aboveembodiments can be carried out without departing from the scope and thespirit of the invention that is intended to be limited only by theappended claims.

What is claimed is:
 1. A non-coaxial series fan structure comprising: aninclined fan frame body assembly having a receiving space including: afirst rotor space, a second rotor space, a flow guide passage, a firstbase seat obliquely disposed in the first rotor space and havingmultiple first support sections, and a second base seat obliquelydisposed in the second rotor space and having multiple second supportsections, the first and second support sections being connected to aninner wall of the inclined fan frame body assembly and the first and thesecond support sections each configured as static inclined bladestructures, the flow guide passage being formed between the first andsecond base seats in communication with the first and second rotorspaces; a first rotor assembly disposed on the first base seat; and asecond rotor assembly disposed on the second base seat, wherein thefirst and second rotor assemblies are disposed in a non-coaxial, seriesarrangement such that the first rotor assembly drives an airflow to passthrough the second rotor assembly, a flow direction and pattern of theairflow entering the non-coaxial series fan structure changing thereinso as to destroy development of an audio frequency dipole.
 2. Thenon-coaxial series fan structure as claimed in claim 1, wherein theinclined fan frame body assembly has a horizontal axis, the horizontalaxis and outer wall of the inclined frame body assembly containing afirst angle.
 3. The non-coaxial series fan structure as claimed in claim1, wherein the inclined fan frame body assembly has a first verticalaxis, the first vertical axis and the first base seat containing asecond angle.
 4. The non-coaxial series fan structure as claimed inclaim 1, wherein the inclined fan frame body assembly has a secondvertical axis, the second vertical axis and the second base seatcontaining a third angle.
 5. The non-coaxial series fan structure asclaimed in claim 1, wherein the inclined fan frame body assembly furtherhas a first support frame and a second support frame, the first supportframe and the first base seat being integrally formed, the secondsupport frame and the second base seat being integrally formed.
 6. Thenon-coaxial series fan structure as claimed in claim 5, wherein thefirst and second support frames are assembled by insertion, locking,adhesion, engagement or latching.
 7. The non-coaxial series fanstructure as claimed in claim 5, wherein the first support frame has afirst air inlet and a first air outlet, the first air inlet and thefirst air outlet communicating with the first space, the second supportframe having a second air inlet and a second air outlet, the second airinlet and the second air outlet communicating with the second space. 8.The non-coaxial series fan structure as claimed in claim 1, wherein theinclined fan frame body assembly has an upper support frame and a lowersupport frame, the lower support frame and the first and second baseseats integrally formed.
 9. The non-coaxial series fan structure asclaimed in claim 8, wherein the upper and lower support frames areassembled by insertion, locking, adhesion, engagement or latching. 10.The non-coaxial series fan structure as claimed in claim 1, wherein thefirst rotor assembly has a first receiving section for receiving thereina first stator assembly and the second rotor assembly has a secondreceiving section for receiving therein a second stator assembly.